Resilient wheel.



G. D. GALVIN.

EESILIENT WHEEL.- APPLICATION FILED ulm, 1912.

1,021,515. Patented Mar. 26, 1912.

WITNESSES V t monum UNITED STATES CARROLL n. GALVIN, or MERCHANTVILLE,

PATENT OFFICE.

NEW JERSEY, ASSIGNOR OF ONE-SIXTH TO- CHARLES JAOOBSEN, ONE-SIXTH '10-EUGENE S. COGHRAN, AND. ONE-SIXTH T AMANDUS F. JOBSS,'ALI1 OFWASHINGTON, DISTRICT OF COLUMBIA.

BESIIJENT HEEL.

wheels and consists in its broad and genericscope of a novel demountablefelly, which is secured at its inner periphery to a pneuniatic tube orcushion, and at its outer periphery. to a tread member of any desired orconventional construction.

. of a demountable felly which is substantially It further consists of anovel construction mens s within the .ion employed.

It further consists of a novel construction of a demountable felly withwhichcoopersites a novel construction and arrangement of an inflatabletube.

It further consists of a novel construct-ion pneumatic tube or cushof ademountable felly' which may be readily.

assembledand removed with respect to the rim 'of the wheel body, theinner portion of such detachable felly being recessed in such a mannerthat by the. air compression when the tube is inflated, it interlocksaround and under projecting shoulders of the telly, the

inner face of t-hedetachable felly being con-' structed concentric -tothe outer face of the wheel rim, thus becoming a ridingmember for thewheel body in case of deflat on, without resultant injury to the wheelconstruction or stoppage for repair or injury to the pneumatic tube. i 4

It further consists of a novel construction I of an inflatable tube, theinner periphery of the tread, it being tube is thus direct felly memberand. with the detachable felly which is provided with terminals,-whichin terlock with the fixed rim and the fastening devices therefor, whilethe outer periphery of the inflatable tube interlocks with thedetachable felly member and the fastening devices cooperating with suchfelly and-with notdthat the inflatable y {connected with the fixedmember, so that the inner periphery of the two will be held insuspension. a

- It further consists of a novel construction of a pneumatic tube andanovel manner of securing the same-in position w th respect to theother, parts of the device. i

' Specification 0! Letters P tent.

Anplicatlon filed January 8, 1913. Serial No. 669,97

' Patented Mar. 26, 1912.

It further consists of other novel features of construction, all'as willbe hereinafter full set forth.

or the purpose of illustrating my-invent1on, I have shown in the accmpanying drawings one form thereof which is at present pre found inpractice to give satisfactory and reliable results, although it is to beunderstood that the various instrument-alities of which my inventionconsists can be variously arranged and organized and, that my inventionis not limited to the precise arrangement and organization of theseinstrumentalities as herein shown and described.

Figure 1 represents a sectional elevation of a portion of a resilientwheel embodying my invention. Fig. 2 represents a side elevation of aportion of my device. Fig. 3 represents-- a sectional elevation similarto Fig.1. Figs. 4 and 5 represent sectional views showing details of theconstruction.

.1 designates the spokes which are secured erred by me, since the samehad been with respect to the fixed rim or innerfelly 2 in any desiredmanner, said fixed rim or felly 2 being provided with inwardlyconvergingsides 3, the inner portions of which are recessed as indicated at 4. Theouter periphery of the fixed rim 2 .has secured thereto in any desiredmanner a tnetal tire 5, the side faces of which are preferably roundedas isindicated at 6. I

7 designates clamping disks which are provided with a laterallyextending flange 8 adapted to interlock with the recesses'et of thefixed rim 2, said disks 7 being secured in assembled position by meansof draw bolts 9 provided with nuts 10, saidrods 9 assing through thefixed rim 2 and also t rough the inner terminals 11 of the inflatabletube 12, which will now be described; This'tube is preferablyconstructed of alternatelayers of fabric and rubber and comprises thedriving disks 13, the inner terminals 111 of which have embedded thereinthe cores 14,.

thereby formin non-compressible wed eshaped termina s which interlockwith t e clamping plates ,7 and the fixed rim- 2'. The.-

outer per1phery'"of" the side disks '13 has embedded therein thenon-compressible cores .15, thereby forming structitjwof an outerdemountable felly 17 wedge-shaped terminals. 16,- which are inter ockedwith. a novel con-,

' .in.- 1 t; manner hereinafter explained. The

outer portion or layer of the pneumatic tube periphery of the innerlayer of the pneu matic tube is centrally splitas indicated at 20.andt.is stitched or otherwise secured together its indicated at 21. Thedemountable fe1ly17 is recessed as indicated at 22,thereby;..;fior1ning.shoulders 23, the inner lJEIiPhr:

cry of which is concentric to the face 24 of the tube 12.

25 designates a layer of any desired material which engages the sidefaces and the inner periphery of the 'demountable felly 17 for itsreinforcement, it beingnoted that the inner periphery of saiddemountable felly 17 is centrally recessed as indicated at 26 in orderto receive-the ends of the pneumatic tube and prevent creeping of .thelatter. Theside walls ofwthe demountable felly near their outerperiphery are'beveled inwardly as is indicated at- 27, thereby adaptingthe same, to. interlock with the wedge shaped terminals 16 and the clamping rings 28, which latter are secured with respect to'thefolly 17 bythe draw-bolts .29 passing therethrough, and also threugh the terminals16 and the clamping r1n gs,..' suchbolts being provided with fasteningmeans, such as the'nuts 30.

31 designates the outer rubber tread which; "is vulcanized on to a hardrubber base '32,

which is further dovetailed on to a serrated metal. base or tire 35. '33designates reinforcing dowels whichfix the telly 17 to. the tread andprevent creeping of the outer tread on the fel-ly. 34, designates avalve controlled conduit of any desired or conventional type which.passes through the fixed rim, .2,- the tire 5, and ;-;theinflatable tube12inv order that such tube may be inflated (ir deflated asldesiredv Ipreferably also employ set screws 36 Which e11gage;tl1e

clamping plate 28 and the metal body portion of the tread The clampingplates 7 are curved doivnwardluand outwardly as indicated at 37in. order to partially encompass the cushioning zone of the tire.;.

and preferably terminate at a point beyond the inner periphery of thedemountable telly 17 in order to resist the :side thrust of the treadmember. c

Special attention-is (lirected to-the manner in which the inflatabletubeis split at its outer periphery thereby ,cnabling one to vulcanizeadditional material on the in ner face of the tube in case the sameshould at any tune become necessary by the reopening of said tube.

In brief-conclusion of the salient 'flilHilOlls' of my novelconstruction of demountahlc felly in combination with its inflatabletuluand its exterior tread, I obtain direct drive for the transmissionof power from the body member to the outer treadby means of thewedge-shaped terminals interiorlyand exteriorly placed uponsaidcombination of tube and shoe. By thus placing'the pneumatic tubewithin the rigid exterior folly ofthewheel; I form a circular shockabsorblui within the wheel itself, whereby all rebound shock is absorbedat right angles tuits point said distribution of weight to carry myload-- at one-fifth of the air pressure per square inch of tube as foundin actual practice compared to the air pressure required to carrysimilar load upon pneumatic tube.

:placed exterior to its felly as in present practice.

By forming the transverse shoulders in the outer felly, cushioning uponthe jttktaposed-contortions of the-pneumatic tube as shown in drawing, Iobtain a resisting leverage to-rounteract by the air pressure anyunnatural deviation or side-thrust of the.

outer tread in skidding.

'I also call special attention to the fact that by this. novelCOIISiZIUCtiOH;111111 enabling the outer tread under speedgtnretain itsnatural vertical plane of mom mmnn.

leaving .the body member of the'f vheel to instantaneously adjust itselfautomatically ,with the line. of its axle on striking [chuckholes. orroad obstructions without'interrupting the gyroscopic plane of its outertread periphery.

It will be noted that by a novel construction 'of partingthe pneumatictube in manufacture for the purpose of vulcanization upon thelmold andby my system of refastening the two ends of the tube, I may by "illlSnm'elconstruction proceed at any time to reopenthe pneumatic tube'forpurposes of repair or investigation without inpiring the functions ofsaid tube upon reassen'ibling.

It will be understood thatthc inner tube 12 mas be constructed of anydesired nu-aber of layers of fabric and rl'i-tther u'h eji izo may bearranged alternately or'in an y other 7 desired manner, and the drivingdisks 1 may be constructed in a similar manner as is l'nost clearly seenin Figs. at and 5, from which it will be apparent that the drivingrubber and fabric 37* and 38, respectively.

disks 1 are composed of alternate layers oi and that the core 14,preferably of hard rubber, is interposed between the layers of fabric 38to form the wedge-shaped terminal 11 which forms a continuation of oneof the layers of rubber 37". It will be understood that the spokes 1 aresecured in any desired manner with respect to a hub 39 of any desired orconventional type. The inflatable tube 12 may also be constructed of anydesired number of layers of fabric and rubber and arranged in anydesired manner, and in Fig. 4 I have shown the same as consisting oflayers of rubber 40 and of fabric 41. It will now be apparent thatalthough I have shown the inner layer of the inflatable tube as beingsecured to the outer layer of driving disks at the various points ofcontact, that in the broad scope of my invention the.driving disks andthe inner tube may. be entirely separate and distinct and still bewithin the broad scope of my invention.

It'will now be apparent that I have de-' vised a novel and usefulconstruction of a resilient wheel, which embodies the features. ofadvantage enumerated as desirable the statement of the invention and theabove description, and while I have, in the present instance, shown anddescribed a preferred of said outer felly.

embodiment thereof which has been. found in practice to givesatisfactory and'reliable results, it is to be understood that-thesalife is susceptible of modification in various particulars withoutdepartingfrom the spirit or scope of the invention or sacrificing any ofits advantages.

Having thus described my invent-ion, what I claimas new and desiretosecure'by Letters Patent, is

1. In a v resilient wheel, the combination of an inner felly, an'outerfelly having outer and inner portions and recesses in its sides and alsohaving a recess in its inner periphery, and an inflatable tube havingan'inflated annular portion interposed between theinner and outerfollies, and inwardly directed inflated portions occupying the siderecesses of the outer felly, and also having .end portions seated in therecess in the inner Ina resilient wheel, the combination and innerportions and side recesses between the same and also having a recess inits inner periphery, a pneumatic tube having an inflated portiondisposed between the fellies and inwardly directed inflated portions disposed in the side recesses of the outer felly and also having end'portions secured together and disposed in the recessin the innerperiphery of the outer felly, inner'terminals cupyiug said side recessesof said outer felly,

said tube having its outer peripheral ortion split and its juxtaposedend portions secured togethemand seated in said recessin said innerperiphery of said outer felly, means for secur ng said tube to saidouter felly, side plates having the flaring portions 37,and the inwardlyextending flanges 8,-and

fastening devices common to said inner folly and side plates.

5. In a, resllient wheel, an inflatable tube,-

means .fo'r securing the inner periphery of said tube in position, adetachable metal covered telly having annular side recesses formingT-shaped shoulders, at its inner peri hery interlocking with the outerinwar lyf contorted periphery of said tube when, inflated, and adetachable felly.

6. In a resilient wheel, an inner fixed felly, aninflatable tube adaptedto seat on said inner felly and having innerterminals,meansforinterlocking said terminals with tread secured to saidthe sidesof said inner felly, an outer felly having annular side recessesforming. shoulders contained within said tube and with which saidtubeinterlocks by air compressionwhen inflated, said tube 'havin' outerterminals adapted. to interlock with the sides of said outer felly, anannular recess 26 in said outer telly; said tube being split 'and havingits terminals seated in said recess 26 and secured together, a tread,and

means for securing said tread and said outer terminals with respect tosaid outer fell 7. In a resilient wheel, an inner fixed fel y aninflatable tube having terminals at ,its

inner periphery, means for securing said terminals with respect to saidinner felly,-

said tube having terminals at its outer pe-' riphery, a detachable fellycovered with a reinforcing layer, a tread, means for securing, saidouter terminals and tread with respect to said detachable felly,thelatter bein of an inner felly, an outer felly having outer substantiallyinclosed within said tube'an adapted to interlock therewith, wheninflated. l

8. In a resilient Wheel, an inner fixed felly,

an inflatable tube seated thereon and provided with terminals extendingalong the sides of said felly, clamping disks 'forinterlocking saidterminals with said felly, an outer felly having annular side recessesforming projecting shoulders, the inner peripheries of which areconcentric with the an inner fixed felly, anj'outer telly,substantial-ly T-shaped in cross section, driving disks secured at theirouter periphery to the outer telly, clamping disks for securing thethereto to form with the sides of the T- shaped, telly juxtaposedannular side Walls for the cushioning of side thrust, annular sideplates clamping the outer periphery of said driving disks to said outerfelly, a-

tread carried by said outer felly. transverse draw bolts holding theinnerelamping disks and 'the inner peripheries of the driving disks inassembled position with regard to the fixed telly, and transversedrawbolts holding the outer annular side clamping plates, and the outerperipheries ofthe driving disks in assembled position with regard to theouter f elly. 5

V CAR-ROLL D. GALVIN. itnesses E. IIAYWARD FAIRBALNKS, C. D. MoVAr. 5

Copies of this patent may be obtained for five cents each, by a\ ressingthe Commissioner of Patents.

- Washington, D 0;" i

